55626731 has 2 divisors, whose sum is σ = 55626732. Its totient is φ = 55626730.

The previous prime is 55626721. The next prime is 55626743. The reversal of 55626731 is 13762655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55626731 - 2⁶ = 55626667 is a prime.

It is a super-2 number, since 2×55626731² = 6188666403492722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 55626691 and 55626700.

It is not a weakly prime, because it can be changed into another prime (55626721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27813365 + 27813366.

It is an arithmetic number, because the mean of its divisors is an integer number (27813366).

Almost surely, 2^55626731 is an apocalyptic number.

55626731 is a deficient number, since it is larger than the sum of its proper divisors (1).

55626731 is an equidigital number, since it uses as much as digits as its factorization.

55626731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 55626731 is about 7458.3329906890. The cubic root of 55626731 is about 381.7342957352.

The spelling of 55626731 in words is "fifty-five million, six hundred twenty-six thousand, seven hundred thirty-one".